The 32-year-old regularly racks up millions of views on her videos and had more than 250 million views on her “realistic make-up tutorial” after it went viral.

Now she has brought her refreshingly and sometimes brutally honest sense of humour to her debut book, Am I Doing This Right?, which she launched at Garden City earlier this week.

“It’s a very girly guide to being an adult and all of the struggles you go through,” she explained to AAA.

“It’s written for a millennial. For somebody who wants to dip in and out and be on Instagram stories at the same time. No one has an attention span any more.”

Sydney-based Hennessy also hosts a weekend breakfast show across the Hit Network, which airs on Perth’s Hit 92.9, along with a handful of TV presenting roles.

But in a world full of “influencers” and selfie-taking perfectionists, it’s her self-deprecating sense of humour that continues to open doors. She is currently working with her US management with aspirations to make a Chris Lilley (Summer Heights High) type of show soon.

“I wish I could say I had a formula or any sort of strategy but I don’t know,” she said. “I’m a fluke. I constantly wake up and go ‘How is this real?’. How am I in Perth right now? I don’t know.

“I am relentlessly authentic, relentlessly myself and I would rather people hate on me for who I am than love on me for who I’m not.”

She also decided to expose all sides of her personality in the book — something some people may not know her for.

“I felt like writing about my body image was incredibly difficult and writing about being trolled online was difficult because basically you relive it, and that’s really scary to have that out there.

“And I’m very vulnerable in talking about my struggles with my over-thinking and my anxiety … it’s confronting writing about those type of things and you’re worried about how they are going to be perceived.”

Clearly, Hennessy is doing something right, with some super-fans even flying across from New Zealand to line up for her Perth launch. “Pre-sale went crazy which is kind of scary,” she said. “It’s sort of like one of those weird moments where I’m like ‘That many people want to read it and it’s not even published?’”